EP3960415A1 - Method for producing a water guard for vehicle doors and product thus obtained - Google Patents
Method for producing a water guard for vehicle doors and product thus obtained Download PDFInfo
- Publication number
- EP3960415A1 EP3960415A1 EP21193433.6A EP21193433A EP3960415A1 EP 3960415 A1 EP3960415 A1 EP 3960415A1 EP 21193433 A EP21193433 A EP 21193433A EP 3960415 A1 EP3960415 A1 EP 3960415A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plastic element
- gasket
- water guard
- cavity
- vehicle doors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000004033 plastic Substances 0.000 claims abstract description 34
- 229920003023 plastic Polymers 0.000 claims abstract description 34
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 14
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 9
- 239000004945 silicone rubber Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000007711 solidification Methods 0.000 claims abstract description 3
- 230000008023 solidification Effects 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 241000587161 Gomphocarpus Species 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000033458 reproduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/06—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J10/00—Sealing arrangements
- B60J10/15—Sealing arrangements characterised by the material
- B60J10/16—Sealing arrangements characterised by the material consisting of two or more plastic materials having different physical or chemical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J10/00—Sealing arrangements
- B60J10/70—Sealing arrangements specially adapted for windows or windscreens
- B60J10/74—Sealing arrangements specially adapted for windows or windscreens for sliding window panes, e.g. sash guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
- B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
- B29L2031/005—Profiled members, e.g. beams, sections having a profiled transverse cross-section for making window frames
Definitions
- the present invention relates to the field of vehicle components and the moulds and production methods thereof. More generally, the present invention relates to the automotive industry.
- the door locks are centralised and can be activated using a button; the windows are electric; inside there is an ergonomic projection that acts as an armrest; inside a lateral storage compartment is present; there are thermal insulation layers; materials suitable for sound isolation are provided for; there are sensors that indicate that the door is not closed..., and so on and so forth.
- the door is the only element which has the face designed to be located inside the cockpit which, when the door is open, is found outside, and therefore in contact with atmospheric agents and, possibly, with rain.
- the same slot that exists between the body of the vehicle roof and the edge of the door is subject to infiltration of water, especially in case of heavy rain.
- the element which prevents water from falling into the vehicle is called, in technical jargon, "water guard”.
- water guard used to consist of a two-sided adhesive polyurethane foam which used to be extruded by a special machine.
- the production of this element therefore, to date, provides for at least two production steps: first the production of the plastic element and subsequently the polyurethane cord.
- the object of the present invention is therefore to provide an innovative water guard both in the product, thanks to the use of convenient materials, and innovative in the production process, that is obtained by means of a single co-moulding process.
- a method for producing a water guard for vehicle doors and product thus obtained, which effectively resolves the problems outlined above.
- the production of the water guard of the present invention can be carried out using existing moulds; in particular double moulds (or in any case provided with a plurality of cavities-interspaces) of the rotary table type or with transfer.
- the method for producing the water guard according to the invention comprises the steps of:
- a mould is advantageously used that is provided with movable devices suitable to define a plurality of holes at the coupling portion between said plastic element and said gasket.
- the holes are suitable to be subsequently filled with silicone rubber or thermoplastic elastomeric material, such as TPE, in order to form nail heads which establish a mechanical constraint between the rigid plastic element and elastomeric gasket.
- the method may comprise a step for coupling a mechanical support element suitable to support said gasket at the lower part.
- the shape of the interspaces of the mould which forms the water guard of the present invention provides for the standard shape of the plastic element, while the shape of the gasket has, at a free edge, a comb-like profile provided with a plurality of teeth suitable to drain water and humidity.
- the water guard 10 of the present invention in its preferred embodiment is shown. It comprises a plastic element 1 and a gasket 2 which adheres to a coupling profile 2' arranged at an upper portion 1' of the plastic element 1.
- the gasket 2 is obtained by means of a mould injection process, made of thermoplastic elastomer (such as TPE) or silicone rubber. It has a coupling edge 2' with the upper portion of the plastic element 1, while the free edge 2" is comb-shaped, provided with a plurality of teeth 4 suitable to drain water and moisture.
- thermoplastic elastomer such as TPE
- silicone rubber silicone rubber
- Fig. 2 shows an element which adds stability to the gasket 2, i.e., a mechanical support 5 suitable to support said gasket 2 at the lower part and coupled to said plastic element 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
Description
- The present invention relates to the field of vehicle components and the moulds and production methods thereof. More generally, the present invention relates to the automotive industry.
- The automotive industry, for decades now, is constantly in pursuit of technical performance and comfort almost perfect for the user, whether a driver or a passenger.
- As a matter fact, over the years every component forming a car has been enriched with technical and aesthetic details, it has been completed with electronic instruments, sensors, alarms and it has become the object of profound innovations that have led to the vehicles we know today.
- Actually, it is no wonder that a Smart - that is one of the smallest cars on the market that can accommodate only two people - looks huge and disproportionate with respect to an old "Fiat 500" or "Mini". The cars of the past, seen with modern eyes, seem like small-scale reproductions of modern-day cars. Yet even those cars used to carry passengers and luggage which, over the years, have not changed their average size.
- So why are today's cars so much bulkier than they used to be, while retaining their original usefulness, that is transportation of people and things by road?
- The answer precisely lies in the ever-increasing pursuit of passenger comfort; an endeavour that has hit all visible parts of a vehicle also including the parts seen by the mechanics alone like a wave.
- Let us now examine the door alone: in the past it only consisted of a metal sheet with an external handle for opening, an internal locking system that used to be activated manually and a crank for raising and lowering the window manually.
- The comfort of modern-day doors is evident: the door locks are centralised and can be activated using a button; the windows are electric; inside there is an ergonomic projection that acts as an armrest; inside a lateral storage compartment is present; there are thermal insulation layers; materials suitable for sound isolation are provided for; there are sensors that indicate that the door is not closed..., and so on and so forth.
- So, given that it is rotatable, it is clear that the door is the only element which has the face designed to be located inside the cockpit which, when the door is open, is found outside, and therefore in contact with atmospheric agents and, possibly, with rain. The same slot that exists between the body of the vehicle roof and the edge of the door is subject to infiltration of water, especially in case of heavy rain.
- Obviously, anti-infiltration technology on vehicle doors has also been the subject of extensive research and technological progress over the years.
- The element which prevents water from falling into the vehicle is called, in technical jargon, "water guard". Until about 10 years ago, it used to consist of a two-sided adhesive polyurethane foam which used to be extruded by a special machine.
- The modern technologies have replaced foam with a plastic element that is mechanically coupled with the electric window system and that carries, perimetrically, an injection of two-component polyurethane (polyol - isocyanate) which, by polymerising, takes the form of a cord so as to act as a gasket and to prevent the filtering of water.
- The production of this element therefore, to date, provides for at least two production steps: first the production of the plastic element and subsequently the polyurethane cord.
- There do not seem to be any optimised solutions on the market which allow the production of the plastic profile already provided with an anti-infiltration perimeter directly downstream of the moulding.
- The object of the present invention is therefore to provide an innovative water guard both in the product, thanks to the use of convenient materials, and innovative in the production process, that is obtained by means of a single co-moulding process.
- According to the present invention, a method is provided for producing a water guard for vehicle doors and product thus obtained, which effectively resolves the problems outlined above.
- Advantageously, the production of the water guard of the present invention can be carried out using existing moulds; in particular double moulds (or in any case provided with a plurality of cavities-interspaces) of the rotary table type or with transfer.
- In particular, the method for producing the water guard according to the invention comprises the steps of:
- moulding of the plastic element in a first cavity of the double mould wherein the first cavity has the exact shape of the plastic element;
- transferring the plastic element - solidified by now - to a second cavity which has the shape of the complete water guard; of said double mould. The transfer, depending on the type of mould used, is carried out by a mechanical arm or by the rotation of the rotary table of the mould;
- injecting a predetermined amount of a thermoplastic elastomer of the TPE or silicone rubber type, at the empty portion of said second cavity of said double mould, the remaining cavity portion being filled with said plastic element;
- waiting for the time of solidification of the silicone rubber or of the thermoplastic elastomer which will form the gasket of the water guard and removal of the complete water guard.
- Possibly, in an embodiment of the present invention, a mould is advantageously used that is provided with movable devices suitable to define a plurality of holes at the coupling portion between said plastic element and said gasket. The holes are suitable to be subsequently filled with silicone rubber or thermoplastic elastomeric material, such as TPE, in order to form nail heads which establish a mechanical constraint between the rigid plastic element and elastomeric gasket.
- Advantageously, the method may comprise a step for coupling a mechanical support element suitable to support said gasket at the lower part.
- The shape of the interspaces of the mould which forms the water guard of the present invention provides for the standard shape of the plastic element, while the shape of the gasket has, at a free edge, a comb-like profile provided with a plurality of teeth suitable to drain water and humidity.
- In other embodiments, the gasket may have a U-shaped or circular profile.
- The advantages offered by the present invention are apparent in the light of the description set forth herein and will be further clarified by the accompanying figures and the detailed description thereof.
- The invention will be described hereinafter in at least a preferred embodiment by way of non-limiting example and with the aid of the attached figures, wherein:
-
FIGURE 1 shows an example of thewater guard 10 according to an embodiment in which thegasket 2 is comb-like. -
FIGURE 2 illustrates the two steps of producing thewater guard 10 with the rotary table mould technique for obtaining thenail head 3 in thegasket 2. -
FIGURE 3 shows a further embodiment of thewater guard 10 in which thegasket 2 is U-shaped and amechanical support element 5 is present at the lower part. - The present invention will now be illustrated by way of non-limiting or binding example, using the figures which illustrate some embodiments in relation to the present inventive concept. With reference to
FIG. 1 thewater guard 10 of the present invention in its preferred embodiment is shown. It comprises aplastic element 1 and agasket 2 which adheres to a coupling profile 2' arranged at an upper portion 1' of theplastic element 1. - The
gasket 2 is obtained by means of a mould injection process, made of thermoplastic elastomer (such as TPE) or silicone rubber. It has a coupling edge 2' with the upper portion of theplastic element 1, while thefree edge 2" is comb-shaped, provided with a plurality ofteeth 4 suitable to drain water and moisture. - In this case the adhesion between the
plastic element 1 and thegasket 2 is purely chemical. In order to increase the constraints between the two components of thewater guard 10, a further preferred embodiment, shown inFig. 2 , has - at the coupling edge 2' - a plurality ofnail heads 3 for the mechanical coupling between theplastic element 1 and thegasket 2. Lastly,Fig. 3 shows an element which adds stability to thegasket 2, i.e., amechanical support 5 suitable to support saidgasket 2 at the lower part and coupled to saidplastic element 1. Lastly, it is clear that modifications, additions or variations which are obvious to a person skilled in the art may be applied to the invention described heretofore without departing from the scope of protection provided by the attached claims.
Claims (10)
- Method for producing a water guard (10) for vehicle doors, suitable to produce a water guard (10) comprising a plastic element (1) and a gasket (2) which adheres to a coupling profile (2') arranged at an upper portion (1') of said plastic element (1); said method being characterised in that it occurs in a double mould having a first cavity and a second cavity and in that it comprises the steps of:- moulding said plastic element (1) in a first cavity of said double mould; said first cavity having the shape of said plastic element (1);- transferring said plastic element (1), by now solidified, to said second cavity of said double mould; said transfer being carried out by a mechanical arm; said second cavity having the shape of said complete water guard (10);- injecting a predetermined amount of silicone rubber or of a thermoplastic elastomer, such as TPE, at the empty portion of said second cavity of said double mould, the remaining cavity portion being filled with said plastic element (1);- waiting for the time of solidification of said silicone rubber or said thermoplastic elastomer which will form said gasket (2) and removal of the complete water guard (10).
- Method for producing a water guard (10) for vehicle doors, according to the preceding claim 1, characterised in that during said moulding of said plastic element (1), the mould is provided with movable devices suitable to define a plurality of holes (3') at the coupling portion (2') between said plastic element (1) and said gasket (2); said holes (3') being suitable to be subsequently filled with said silicone rubber or said thermoplastic elastomer in order to form nail heads (3) which establish a mechanical constraint between the plastic element (1) and the gasket (2).
- Method for producing a water guard (10) for vehicle doors, according to any one of the preceding claims 1 or 2, characterised in that it occurs in a mould with rotary table.
- Method for producing a water guard (10) for vehicle doors, according to any one of the preceding claims, characterised in that it comprises a coupling pitch of a mechanical support element (5) suitable to support said gasket (2) at the lower part.
- Water guard (10) for vehicle doors, comprising a plastic element (1) and a gasket (2) which adheres to a coupling profile (2') arranged at an upper portion (1') of said plastic element (1); said water guard (10) being characterised in that said gasket (2) is made of silicone rubber or of a thermoplastic elastomer (TPE).
- Water guard (10) for vehicle doors, according to the preceding claim 5, characterised in that said gasket (2) has, at the edge (2') for coupling with said plastic element (1), a plurality of nail heads (3) for the mechanical coupling with said plastic element (1).
- Water guard (10) for vehicle doors, according to the preceding claim 5 or 6, characterised in that said gasket (2) has, at a free edge (2"), a comb-like profile provided with a plurality of teeth (4) suitable to drain water and moisture.
- Water guard (10) for vehicle doors, according to any one of the preceding claims 5 to 6, characterised in that said gasket (2) has a U-shaped profile at a free edge (2").
- Water guard (10) for vehicle doors, according to any one of the preceding claims 5 to 6, characterised in that said gasket (2) has a circular profile at a free edge (2").
- Water guard (10) for vehicle doors, according to any one of the preceding claims 6 to 9, characterised in that it comprises a mechanical support element (5) suitable to support said gasket (2) at the lower part and coupled to said plastic element (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102020000020779A IT202000020779A1 (en) | 2020-09-01 | 2020-09-01 | METHOD OF PRODUCTION OF A WATER SHELTER FOR VEHICLE DOORS AND PRODUCT THUS OBTAINED |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3960415A1 true EP3960415A1 (en) | 2022-03-02 |
EP3960415B1 EP3960415B1 (en) | 2023-06-07 |
Family
ID=73401904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21193433.6A Active EP3960415B1 (en) | 2020-09-01 | 2021-08-27 | Method for producing a water guard for vehicle doors and product thus obtained |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3960415B1 (en) |
IT (1) | IT202000020779A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012153234A1 (en) * | 2011-05-10 | 2012-11-15 | Hutchinson | Profile section moulded by multi-injection moulding and forming a seal or a moulding for the body of a motor vehicle, and method for manufacturing same |
DE102018007862A1 (en) * | 2018-10-05 | 2020-04-09 | Psa Automobiles Sa | Window frame element, method and machine for its manufacture |
-
2020
- 2020-09-01 IT IT102020000020779A patent/IT202000020779A1/en unknown
-
2021
- 2021-08-27 EP EP21193433.6A patent/EP3960415B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012153234A1 (en) * | 2011-05-10 | 2012-11-15 | Hutchinson | Profile section moulded by multi-injection moulding and forming a seal or a moulding for the body of a motor vehicle, and method for manufacturing same |
DE102018007862A1 (en) * | 2018-10-05 | 2020-04-09 | Psa Automobiles Sa | Window frame element, method and machine for its manufacture |
Also Published As
Publication number | Publication date |
---|---|
IT202000020779A1 (en) | 2022-03-01 |
EP3960415B1 (en) | 2023-06-07 |
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